I reached 55 about 2 years back. I withdrew all I can from CPF and left it with the minimum retention sum. I opened an investment account and learn how to trade US derivatives. Never regretted. The only regret is that I should have started earlier.
envy you having such talent, skill and knowledge to invest and trade to make big bucks .... those of us without can only rely on SA 4% (later becoming OA 2.5%) ...